Command: Take SqliteDbService instead of connection string

cli/commandadd.h

@@ -2,18 +2,11 @@
 #define COMMANDADD_H
 #include <QMutex>
 #include "command.h"
-enum AddFileResult
-{
-	OK,
-	SKIPPED,
-	DBFAIL
-};
-
+#include "filesaver.h"
 class CommandAdd : public Command
 {
   private:
-	AddFileResult addFile(QString path);
-	QMutex writeMutex;
+	SaveFileResult addFile(QString path);
 
   public:
 	using Command::Command;